Och530 - Mitsubishi Electric SUZ-KA25VA3 Technical & Service Manual

OPERATING PROCEDURE
4. Removing the discharge temperature thermistor,
defrost thermistor, outdoor heat exchanger tempera-
ture thermistor and ambient temperature thermistor
(1) Remove the cabinet and panels. (Refer to procedure 1.)
(2) Disconnect the lead wire to the reactor and the following
connectors:
<Inverter P.C. board>
CN641 (Defrost thermistor and discharge temperature ther-
mistor)
CN643 (Ambient temperature thermistor)
CN644 (Outdoor heat exchanger temperature thermistor)
(3) Pull out the discharge temperature thermistor from its holder.
(4) Pull out the defrost thermistor from its holder.
(5) Pull out the outdoor heat exchanger temperature thermistor
from its holder.
(6) Pull out the ambient temperature thermistor from its holder.
5. Removing outdoor fan motor
(1) Remove the top panel, cabinet and service panel. (Refer to
procedure 1.)
(2) Disconnect the following connectors:
<Inverter P.C. board>
CN931 and CN932 (Fan motor)
(3) Remove the propeller nut.
(4) Remove the propeller.
(5) Remove the screws fixing the fan motor.
(6) Remove the fan motor.
6. Removing the compressor and 4-way valve
(1) Remove the top panel, cabinet and service panel. (Refer to
procedure 1.)
(2) Remove the back panel. (Refer to procedure 1.)
(3) Remove the inverter assembly. (Refer to procedure 2.)
(4) Recover gas from the refrigerant circuit.
NOTE:
Recover gas from the pipes until the pressure gauge
shows 0 kg/cm² (0 MPa).
(5) Detach the brazed part of the suction and the discharge
pipe connected with compressor.
(6) Remove the compressor nuts.
(7) Remove the compressor.
(8) Detach the brazed part of 4-way valve and pipe. (Photo 5)

OCH530

Photo 6
Outdoor heat
exchanger tempera-
ture thermistor
Photo 7
Photo 8
Brazed part of the
discharge pipe
54
PHOTOS
Ambient tem-
perature
thermistor
Defrost thermistor
Propeller nut
Screws of the
outdoor fan motor
Discharge temperature
thermistor
Brazed part of the
suction pipe